The DO type floating oil seal produced by the company is made of centrifugal casting of nickel-chromium-molybdenum alloy and combined with nitrile rubber (NBR) O-rings. It has the characteristics of simple structure and reliable design. It is widely used in engineering machinery and production plants in harsh working conditions, Severely worn working conditions, etc. It has simple structure, reliable design, good sealing performance, can effectively prevent external dirt, dust, water and abrasives from intruding and prevent internal oil or grease leakage, high cost performance, long service life, self-aligning compensation for shaft eccentricity or misalignment Medium, maintenance-free, easy to assemble and other features. It is widely used in the working conditions of engineering machinery and production plants with harsh working conditions and severe wear. Including: crawler vehicles, such as excavators and bulldozers, conveyor systems, heavy trucks, axles, tunnel shield machinery, agricultural machinery, mining machinery, etc.